cd my-agent
echo "What files are here?" | npm run dev

console.error('[DEBUG] Starting agent...');
console.error(`[DEBUG] Prompt: ${prompt}`);
console.error(`[DEBUG] Executing tool: ${toolName}`);

cast agents list  # See correct slugs
cast invoke correct-slug "Hello"

cast agents get my-agent  # Check status
cast deploy               # Redeploy

{
  "name": "my-agent",
  "version": "0.1.0",
  "entrypoint": "src/index.ts",
  "runtime": "node"
}

// Add error handling
case "my_tool":
  try {
    return await executeTool(input);
  } catch (error) {
    console.error(`[ERROR] Tool failed: ${error.message}`);
    throw error;
  }

export ANTHROPIC_API_KEY=your-key
echo "Hello" | npm run dev

async function executeTool(name: string, input: any): Promise<string> {
  console.error(`[TOOL] ${name} called with:`, JSON.stringify(input));

  const result = await doToolWork(name, input);

  console.error(`[TOOL] ${name} returned:`, result.substring(0, 100));
  return result;
}

// Schema says required: ["path"]
// Make sure you handle missing path
case "read_file":
  if (!input.path) {
    throw new Error("path is required");
  }
  return fs.readFileSync(input.path, "utf-8");

async function runAgent(prompt: string) {
  const messages = [{ role: "user", content: prompt }];

  while (true) {
    console.error(`[CLAUDE] Sending ${messages.length} messages`);

    const response = await client.messages.create({
      model: "claude-sonnet-4-20250514",
      messages,
      tools
    });

    console.error(`[CLAUDE] Stop reason: ${response.stop_reason}`);
    console.error(`[CLAUDE] Content blocks: ${response.content.length}`);

    // ... rest of loop
  }
}

cast secrets list my-agent

cast agents get my-agent

Name:        My Agent
Slug:        my-agent
Status:      active
Sandbox ID:  sbx_xyz789

cast deploy